toolchain: add BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_0

Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

toolchain/Config.in

@@ -397,10 +397,15 @@ config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_20
 	bool
 	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_19
 
+config BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_0
+	bool
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_20
+
 # This order guarantees that the highest version is set, as kconfig
 # stops affecting a value on the first matching default.
 config BR2_TOOLCHAIN_HEADERS_AT_LEAST
 	string
+	default "5.0"  if BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_0
 	default "4.20" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_20
 	default "4.19" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_19
 	default "4.18" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_18